Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Free falling with air resistance question
- Clara Chung
- · Replies 12 ·
Inelastic Collision - Kinetic Energy
- JayaSuria
- · Replies 13 ·
One of those 'think about' problems in textbook
- Bennyp85
- · Replies 8 ·
Kinetic energy of positron and proton
- Gummy_Bear
- · Replies 3 ·
Object drawn across two support points
- swpz
- · Replies 18 ·
Finding ionization potential from energy difference between n=2 and n=3 in hydrogen
- Magnetic Boy
- · Replies 3 ·
Statics: Problem about Equilibrium in 3-dimensions
- Soumalya
- · Replies 2 ·
Radial force in a circular motion
- Vavi Ask
- · Replies 5 ·
Kinetic Energy when the Force is Perpendicular to Velocity
- Vavi Ask
- · Replies 4 ·
Thermal expansion of liquid in a tube
- Soren4
- · Replies 2 ·
Is Δθ in a circle equal to the angle in a velocity vectors triangle?
- Hardikph
- · Replies 8 ·
HW questions about Forces with ball examples
- Avram Bourdeau
- · Replies 4 ·
Calculating average velocity for this kind of motion
- CherryWine
- · Replies 3 ·
Force-neutralizing charge (electrostatics)
- Color_of_Cyan
- · Replies 23 ·
Solving Projectile Motion Problem: 4.2 m/s
- fleur
- · Replies 4 ·
Static Equilibrium Problem involving Moments
- Anil Radhakrishnan
- · Replies 4 ·
Why Is the Electric Potential Higher at Point P Than at Point Q?
- Clara Chung
- · Replies 5 ·
Circular + Projectile Motion question
- Carbon123
- · Replies 22 ·
What Is the Value of Point Charge q in a Square Configuration?
- Clara Chung
- · Replies 4 ·
Archived Strong interaction and strangeness
- mrcotton
- · Replies 1 ·
Calculate the forces and the work
- Gh778
- · Replies 2 ·
Where will a chain of alternating charged beads break first?
- Ankit Chowdhury
- · Replies 16 ·
Problem in Classical Mechanics
- </Henry>
- · Replies 1 ·
Constant velocity and work done
- Samia qureshi
- · Replies 8 ·
Archived Derivation of total magnetic field with changing distance in a coil?
- Violagirl
- · Replies 6 ·
How we know that these angles are equal ?
- Samia qureshi
- · Replies 12 ·
Calculating Electron Speed Between Parallel Charged Plates
- Clara Chung
- · Replies 3 ·
Transformer and power question mutiple choice
- Clara Chung
- · Replies 7 ·
Electric potential due to a dipole
- Dev132435
- · Replies 1 ·
Problem on Doppler effect and sound level
- Soren4
- · Replies 1 ·
Battery’s terminal potential difference
- zohaibtarar
- · Replies 2 ·
Sign of Acceleration of dropped tennis ball at the floor
- Lechiam
- · Replies 5 ·
Draw a Free Body Force Diagram for Tightrope Walker
- MathWA
- · Replies 4 ·
Maximum force on rope and wavefunction
- Soren4
- · Replies 2 ·
Change in potential energy of the particle
- zohaibtarar
- · Replies 1 ·
Capacitor Problem: Find Charge & Potential Difference
- takando12
- · Replies 6 ·
Current and magnetic field in a spherical capacitor
- fabiogn
- · Replies 4 ·
Is Momentum Conserved in a Collision Between Two Unequal Masses?
- lucy bolt
- · Replies 2 ·
What is the Velocity of a Cylinder on an Inclined Plane with a Magnetic Field?
- Hamal_Arietis
- · Replies 30 ·
Archived Syringe Problem (Fluid Dynamics)
- Mintea
- · Replies 6 ·
Archived Binding energy and deuterium nucleus
- alicia113
- · Replies 1 ·
Archived Planck's law and doppler effect
- Unicorn.
- · Replies 1 ·
Determining the force on a loop cause by an infinite line
- mobay
- · Replies 5 ·
Recharging a battery when Lightbulb and TV are in parallel
- Jtwa
- · Replies 3 ·
Problem in Great Courses Video On Physics
- Joa Boaz
- · Replies 3 ·
A question related to transformer
- Clara Chung
- · Replies 8 ·
Why can sin θ be approximated as x/L in Young's double slit equation?
- KneelsBoar
- · Replies 3 ·
External forces and external moments
- harmyder
- · Replies 1 ·
How to find amplitude in SHM problem
- Brittany King
- · Replies 1 ·
Force needed to accelerate mass at 1 m/s² along a 30° incline
- ultinator
- · Replies 16 ·
Electric Potential of charged isolated body.
- ForTheGreater
- · Replies 3 ·
The relation between Electric Field and Electric Potential
- ItsAnshumaan
- · Replies 5 ·
Is Angular Momentum Conserved for Instantaneous Center Rotation?
- Hamal_Arietis
- · Replies 8 ·
Why does tension equal weight plus centripetal force?
- Osaid
- · Replies 2 ·
What is the torque exerted by T about point O?
- Auburn2017
- · Replies 6 ·
Position and acceleration graphs
- dlee9
- · Replies 2 ·
How does an oscillator truly work?
- Heitorthehandyman
- · Replies 7 ·
Expression for Magnitude of Electric Field by dipole integral
- elements
- · Replies 4 ·
How to get the matrices in partial trace
- munirah
- · Replies 1 ·
Finding bearing forces in a grooved pulley pipe bender
- Soumalya
- · Replies 11 ·
Calculating Force: Bicycle & Block Mass, Friction Coefficients
- JoeSmith1013
- · Replies 7 ·
Momentum, Impulse, and KE Question?
- FlatEarth
- · Replies 9 ·
Solving an equation involving Coulomb's law
- logearav
- · Replies 3 ·
Two masses on strings crossing each other
- Vibhor
- · Replies 11 ·
Missle Defense System (Projectile Motion)
- dlee9
- · Replies 1 ·
Harmonic Motion with External Force: Impact on Period?
- physics user1
- · Replies 3 ·
Electric field at the centre of a ball
- Nitin Gupta
- · Replies 4 ·
Speed bump reaction force on a car
- Duffelmop
- · Replies 3 ·
Calculating air pressure from altitude, RH and temperature?
- Alfreds9
- · Replies 3 ·
Pump used to halve the time taken by fluid to flow out
- Soren4
- · Replies 2 ·
Resultant Force and its Components
- Auburn2017
- · Replies 29 ·
Discussing an experiment (radioactivity, Geiger-counter)
- JulienB
- · Replies 7 ·
Determination of the natural frequency of a Hartnell governor
- ahmed tb
- · Replies 3 ·
Cart slowing down as fan force increases with time
- xxphysics
- · Replies 8 ·
Floating block with objects that are thrown in a liquid
- Soren4
- · Replies 8 ·
Understanding Coriolis Force in a Rotating Pipe
- Narahari Narasapur
- · Replies 6 ·
Device that detect waves in a frequency range and beats
- Soren4
- · Replies 1 ·
Angles Formed by Vector î + ĵ + √2k̂
- Yodaa
- · Replies 4 ·
Power of a bicycle accelerating up a slope.
- Kraken_Head
- · Replies 8 ·
Boat crossing river with constant angle: finding speed and angle
- CherryWine
- · Replies 1 ·
Complete Square + Leibniz question (2 questions)
- Craig Scott
- · Replies 5 ·
How to calculate instantaneous acceleration if -->
- Hardikph
- · Replies 12 ·
Calculating the energy that is released in nuclear fusion
- Tangent100
- · Replies 3 ·
Electron passing through a magnetic and an electric field
- Quadrat
- · Replies 2 ·
Mass of charged sphere suspended between charged plates
- krbs
- · Replies 4 ·
Pressure force in water on truncated cone with air inside
- Soren4
- · Replies 8 ·
Archived Transformation of Gravitational to Kinetic Energy
- 012anonymousx
- · Replies 1 ·
Bernoulli equation related to minimum pressure inside train
- Soren4
- · Replies 18 ·
Induced emf in various rectangular loops
- Quadrat
- · Replies 5 ·
Index of refraction of the material
- diredragon
- · Replies 3 ·
Consider a collision: What's m1/m2?
- Charlene
- · Replies 5 ·
Ground circuit and kirchhoff law(holiday 27.30)
- skyhj105
- · Replies 1 ·
A problem regarding Galilean relativity
- CherryWine
- · Replies 9 ·
What is the moment of inertia I for rotation around r_cm?
- Charlene
- · Replies 7 ·
Is a=g/3 the only solution or are there other possible solutions?
- UchihaClan13
- · Replies 5 ·
Voltage change when resistance is zero
- Biker
- · Replies 12 ·
Failed Rocket Momentum Problem (Kleppner 4-4)
- TimSon
- · Replies 5 ·
Moving rod viewed in different inertial frames
- Whitehole
- · Replies 1 ·
What is the solution to this inclined plane problem?
- drdevil52
- · Replies 1 ·